Forced-feed oil cup



W. H. ROBERTS.

FORCED FEED OIL CUP.

APPLICATION FILED AU.30, 1919.

1,40%086, Patented Feb. 21, 1922.

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w. H. ROBERTS.v

FORCED FEED OIL CUP.

APPLICATION FILED AUG-30; 1919. 4 v 11,407,086. Patented Feb. 21, 1922.

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? E l Y n. Romaans', oF sensor@ Mosman.. Ass'renosro sostare Basse mu- IACT'URING: `CO.'Liifiirf',4 OF: DETROIT, MICHIGA, A CORPORATON 02E` MICHIGAN.

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To aZZ'ww/m, t may con/cem:

`Be' it kno-wn thatl7 WILLIAM H. ROBERTS, a .citiaen .of the United States of America7 residing at Detroit, inthe county of Wayne and State of'Michigan, have inventedcertain: newA and useful Improvements in Forced-Feed; Oil Oups, offwhich the following is aI specification,l reference being had therein to the accompanying drawings.

This invention. relates to forced feed oil cups, and has .reference particularly to a plunger actuating mechanism for a forced feed oil cup. o i

,It is .an vobject of the invention to provide an oil cup having a plunger reciprocatory therein toindischarge the` oil and to provide-a rotative member for actuatingsaid plunger, the rotative. member being extended throu h a4 wall of the cup.

A further object of the invention is to provide-a plunger mechanism for avforced feed oil cup`V inwhich the discharge stroke ofthe plunger is actuable by afrotative cam member provided with a stem passing through a wall of the cup and having a thrust .bearing on saidl wall7 the suction strokeV of the plunger` being effected by a spring'"`which also normally subjects said cam /member to apressure tending to Vfirmly seat the said stem aty said-thrust' bearing so aps-to avoid a possible leakage of oil.

StillA another object of the'inventionis to providefaforced feed mechanismfor a lubricator cup comprising a plunger for ejecting from the cup al definite quantity of oil ateach stroke and a rotative actuating member for said plunger tending to snap into its position corresponding to the raised position ofthe plunger sothat bothfthe plunger and-its actuating member automatically assumethe initial position'for another stroke after any stroke has been completed.

The invention further consists in the various structural features and arrangements of. parts hereinafter' fully described'. s

lFigureV 1 is a View of the yinvention in sectional elevation. a i Y Figure 2 is 'ai similar view of an alter- 1 native construction.

v said cup for attachinglthe 'latter to thev machine or part tobe lubricated.

D is a cylinder within'fthecup-Aformed as anl upward extension lof the nipple C, the t'opcof said cylinder being OpernY 1A plunger E is mounted within said cylinder.V

and is restrained from rotation(thereinl by' opposltely projecting pins Fl engaging in verticalv slots F formed in the cylinder. The

upper and lower limiting positions, betweenl which said plunger travels, are indicated vinthe drawings respectively inY full lines and dash lines. The upstroke or suction stroke'- of the plunger is actuable by ay spring'Gr compressed between said plunger .and the' nipple IC. The down stroke or discharge" stroke of the plunger is actuable by a rotative cam member H engaging in the upper portion of the cylinder Bj the opposing end faces of said cam member and the'plunge'r bein correspondingly V-shaped as indicated at The member H is provided with an speeieation of Letters Patent; Pted Fei@ 21, 19221. Application led August 30, 1919.' Serial No."320`,754

upwardly extending stem J passing through' the top of the oil cup and carrying above'v the oil cupthe actuating handle YK. The stem .I is formed with aV beveled shoulder` L which has a thrust bearing' upon-fa cor-v respondingly shaped seat, interior-ly provided upon the top ofthe oilcup.v M is an intake fittingy for the cylinder D communieating with the latter just below the `plunger E when the latter is raised,y said fitting housino the spring pressed check valve Nf. Said va ve yields upon the rising of the plunger and admits a chargev of oil beneath theplunger. This oil is discharged upon the down stroke of the plungerthrough' the passage 0 formed in the nipple C. A spring pressed check valve Oinsaid passagel closes the-same on the up stroke of the plunger but yields to permit of a dischargeof oil upon the down stroke.

In the operation of the described mech"- anism when the cam member is rotated through a half circle by'- means of handle K .the engagement of the two V-shapedf cam faces H forces the plunger E down-y wardly to the position` disclosed in' dash lines, the charge of oil beneath the plunger being thereby ejected through the passage O. Either a continued rotation of thehandle K -to completeV itsl circle or a return thereof to its initial positiony will permit the spring G to .again elevate theplunger E and thus draw another charge ofY oil into the cylinder through the fitting M. Thus,

a return movement of the cam member H to its normalpositionyshownin full lines in thefdrawings, is effectedA after each down stroke of the plunger. g ment Will be effected by the spring G acting through the cam faces H', since ,in the lowerpositionsof the plunger said cam faces have their apices engaging each other .obviously a. reciprocatory member would tend to discharge a certain amount of oil through its slide bearing. It is a 'feature'of the invention that the actuating member has a snap movement to its position corresponding to the raised position ofthe plunger so that the mechanism is always positioned ready for ejectinga charge' of oil, and thel operator may be always aware of the lubri eating effect secured through any rotation imparted to the handle K. Y

- The construction shown in Figure 2 duplicates that which has been' described with the exception that necessity for the intake fitting M and the check valveN is eliminated by so positioning and proportioning the slots R, corresponding to the slots F of Figure l, that the lower ends of the same 'are uncovered by the plunger E when the latter is in itsnormal raised position, so that a charge of lubricant is admitted below the plunger through said slots. Y

What 1 claim as my invention is: l. The combination with an oil cup,of a plunger operable thereinfor forcing a discharge of oil, and a rotative actuating meinber for said plunger coaxial 'therewith and extending exteriorly of the cup and jour'- naled-in a wall thereof. l

2. The combination with an oil cup, of a plunger operable'therein for forcing a discharge of oil, a rotative member for actuat ing the discharge stroke ofthe plunger, yan

' actuating stem for Vsaid Vmemberextending through a wall of the cup and having an interior thrust bearing upon said wall, and a spring actuating the suction stroke of the plunger, and acting through the plunger and said rotative member upon said stem to seat the latter and establish a. seal at said thrustv bearing.

. 3. The combination with an oil cup, of a plunger for actuating the discharge of oil therefrom, a rotative cam member Within Such returnrv move-y journaled inl a wall thereof.

said cup engaging said plunger fox-actuating the discharge stroke thereof, a spring for actuating the suction stroke of the plunger, and a stem extending fromlsaid cam member through a wall of the oil cup.

4. `'lhecombination with an oil cup, of a cylinder therewithin, a plunger reciproca- Vtory within said cylinder, a rotative actuatingY member for said plunger withing said cylinder, and a stemrfo-r said actuating member extending exteriorly of the oil cup and 5. The combination with an oil cup, of a nipple engaging the bottom thereof having a discharge passage therethrough, a cylinder Awithin the oilV cup formed as an extention of said nipple and connecting with said passage through the nipple, said cylinder having an oil inlet, a plunger reciprocatory in said cylinder, a rotary actuating member for the plunger within said cylinder, and a stem Y for said plunger extending exteriorly of the oil cup.

6. The combination with an oil cup, vof a cylinder therein having an oil inlet communicatingwith the oil cup, andan oil outlet extending exteriorly of the oil cup, said cylinder having its walls oppositely longitudinally slotted, a plunger reciprocatory within said cylinder, pins projecting from said plunger engaging said slotted cylinder to restrain the plunger against rotation, a rotary actuating member for' the plunger within the cylinder, and a stem for said actuating member extending exteriorly of the oil cup. Y

7. The combination with an oil' cup, of a reciprocatory, plunger, and a rotary actuating member therefor within said oil cup, said plunger and actuating member having complementary V-shaped cam faces, and a stern for said actuating member extending exterior-ly of the oil cup, rotation of said actuating memberin either direction effect ing reciprocation of said plunger.

8. The combination with an Voil cup, of a plunger therein for actuating theV discharge of oil, a rotary actuating member for saidlplunger, a stem for said actuating member extending through the cup, and means acting upon thev plunger to return the same to its raised'position and acting through the plunger upon an actuating member to rotatably shift the latter to a der7 and means normally closing said passage.

l0. The combination with an yoil cup, of a plunger operable therein for forcing a discharge of oil, a rotative member for actuating the discharge stroke of the plunger, an actuating stem for said member extending through and journaled in a Wall of the cup and formed With a bevelled an- In testimony whereof I afix my signature.

WILLIAM H. ROBERTS. 

